Wikipedia puts the "preferred walking speed" around 3 miles per hour, so that would be 2 hours of walking per day. So with 8 hours of sleep, 8 hours of work, 2 hours of walking, 1 hour of hygiene, 1 hour of commuting, and 2 hours for meals, you'd still be left with 2 hours of personal time to do all your extracurriculars like cleaning, parenting, spousing, hobbying, shopping, repairing things, etc.
You are neglecting the optimizer approach of working while walking; etc. Also, hygiene during the commute - just shave and brush your teeth on the bus. And sleeping while bathing is a real time saver.
> you'd still be left with 2 hours of personal time to do all your extracurriculars like cleaning, parenting, spousing, hobbying, shopping, repairing things, etc.
In what way is parenting an extracurricular activity?
3mph is a pretty slow stroll - 5 or 6mph is more normal for purposeful walking on the flat - so it’s more like 1:10 of walking, which could take the form of a 35 minute walk somewhere, and a 35 minute walk back.
As for cleaning, repairing things, parenting, shopping - those are all things which can readily incorporate walking and physical activity.
